package com.WGrape.OJ.manager;

import cn.hutool.core.io.FileUtil;
import com.WGrape.OJ.config.CosClientConfig;
import com.qcloud.cos.COSClient;
import com.qcloud.cos.exception.CosClientException;
import com.qcloud.cos.model.COSObject;
import com.qcloud.cos.model.GetObjectRequest;
import com.qcloud.cos.model.PutObjectRequest;
import com.qcloud.cos.model.PutObjectResult;
import com.qcloud.cos.model.ciModel.persistence.PicOperations;

import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

/**
 * @author with葡萄成熟时
 * @version 1.0
 * 对象存储复用方法
 */
@Component
public class CosManager {

    @Resource
    private CosClientConfig cosClientConfig;

    @Resource
    private COSClient cosClient;


/**
 * description 上传对象
 * author Wait葡萄成熟时
 * date 下午9:45 2025/3/17
 */
    public PutObjectResult putObject(String key, File file) {
        PutObjectRequest putObjectRequest = new PutObjectRequest(cosClientConfig.getBucket(), key,
                file);
        return cosClient.putObject(putObjectRequest);
    }
/**
 * description 下载对象
 * author Wait葡萄成熟时
 * date 下午9:45 2025/3/17
 */
    public COSObject getObject(String key) {
        GetObjectRequest getObjectRequest = new GetObjectRequest(cosClientConfig.getBucket(), key);
        return cosClient.getObject(getObjectRequest);
    }
/**
 * description 上传对象（附带图片信息）
 * author Wait葡萄成熟时
 * date 下午10:51 2025/3/17
 */
    public PutObjectResult putPictureObject(String key, File file) {
        PutObjectRequest putObjectRequest = new PutObjectRequest(cosClientConfig.getBucket(), key,
                file);
        // 对图片进行处理（获取基本信息也被视作为一种处理）
        PicOperations picOperations = new PicOperations();
        // 1 表示返回原图信息
        picOperations.setIsPicInfo(1);

        List<PicOperations.Rule> rules = new ArrayList<>();
        // 图片压缩（转成 webp 格式）
        String webpKey = FileUtil.mainName(key) + ".webp";
        PicOperations.Rule compressRule = new PicOperations.Rule();
        compressRule.setRule("imageMogr2/format/webp");
        compressRule.setBucket(cosClientConfig.getBucket());
        compressRule.setFileId(webpKey);
        rules.add(compressRule);
        // 缩略图处理，仅对 > 20 KB 的图片生成缩略图
        if (file.length() > 2 * 1024) {
        // 缩略图处理
        PicOperations.Rule thumbnailRule = new PicOperations.Rule();
        thumbnailRule.setBucket(cosClientConfig.getBucket());
        String thumbnailKey = FileUtil.mainName(key) + "_thumbnail." + FileUtil.getSuffix(key);
        thumbnailRule.setFileId(thumbnailKey);
        // 缩放规则 /thumbnail/<Width>x<Height>>（如果大于原图宽高，则不处理）
        thumbnailRule.setRule(String.format("imageMogr2/thumbnail/%sx%s>", 256, 256));
        rules.add(thumbnailRule);}
        // 构造处理参数
        picOperations.setRules(rules);
        putObjectRequest.setPicOperations(picOperations);
        PutObjectResult putObjectResult = cosClient.putObject(putObjectRequest);
        return putObjectResult;
    }
    /**
     * 删除对象
     *
     * @param key 文件 key
     */
    public void deleteObject(String key) throws CosClientException {
        cosClient.deleteObject(cosClientConfig.getBucket(), key);
    }

}

